Grundfos pumps offer the pinnacle of reliability and performance for a large variety of water circulation applications. From home hydronic circulation to large scale commercial water movement, Grundfos has a pump that will provide years of trouble-free service. The UPS43-100SF is a three speed circulator with a wet-rotor fluid movement design. Solid stainless steel construction guarantees years of reliable performance with minimal maintenance needs, while hardwire electrical connection design allows the pump to tap directly into your home's electrical supply.

Product Features

Durable Stainless Steel ConstructionThe Grundfos UPS43-100SF is crafted from stainless steel, which gives the pump both extended lifespan and protection against corrosion.

Whisper Quiet OperationThe UPS43-100SF pump runs quiet even at high flow levels, ensuring the pump won't distract you from your work or disrupt your sleep.

Resilient Wet-Rotor Fluid MovementThe wet rotor design of the UPS43-100SF lends integrity to both the motor and the rotor itself, providing exceptional longevity to any hydronic system the pump is a part of.

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1 Question Answered

Q: What position of the motor speed switch on this pump is for the low speed?by Sasha from New York on April 05, 2016

A: Fully counter-clockwise is the low speed and turning clockwise will increase the pump speed. The manufacturer says it is important to start the motor in high speed and decrease after pump is running. "After a long shutdown period, multi-speed pumps should be started on speed 3 and then adjusted to the regular setting."by Chris, Product Expert

Easy to locate and order this product. One negative was the pump was back ordered and took more than 1 month to arrive.

Tip: What is a Related Review?* Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.